More and more these days you'll find a variety of platforms and devices in use in any given enterprise. Whether the shift is cross departmental or individual, anything you're investing in has to be robust enough to deal with that variety, as well as anything that may be coming down the line.
We realised quite early on that cherry-picking any one device or platform would seriously inhibit our product's ability to deliver on our promises. The solution was simple; incorporate every know device and every know platform.
Regardless of whether your people in the field are reliant on laptops, tablets or smartphones, iOS, Android or Windows Mobile, Windows, OS X or Linux, there's a fully operational application available for their individual device that offers no compromise in utility.